Even small losses among these voters can have a decisive impact on
parties’ electoral fortunes — particularly in state and local elections.The reason for this is that non-college white voters are well
distributed throughout the country for the purpose of political
representation. With few exceptions, they make up a significant, if not
overwhelming, portion of voters in counties across the nation. This
geographic dispersion makes them influential in every state and in a
disproportionate number of congressional districts (Figure 6)." (subhead, "Implications for 2018 and Beyond")

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Comment: Those who run the Republican Party don't care about non-college white voters either. For that matter, they don't care about any voters.